1, if the reference object is a person and the front of the person can be seen; Subject to the characters in the picture. That is, the right side of the graph is our left side, and the left side of the graph is our right side. (Left and right are opposite).

2. If the reference object is fruit, animals, graphics, etc. ; Subject to the observer. That is, our right side is the right side of the object in the picture and our left side is the left side of the object in the picture. (left and right are the same).

Determination of direction:

The directions commonly used by people are mainly up, down, east, west, south and north.

On the earth, the direction pointing to the center of the earth is down, the direction facing the center of the earth is up, and the up and down are vertical.

What we're going to talk about next is the direction on the ground plane.

On the ground plane, east (due east), west (due west), south (due south) and north (due north) are the four basic directions.